Road-machine.



F. E. ARNDT.

ROAD MACHINE.

APPLICATION FILED D30. 27, 1911.

Patented Oct. 1, 1912.

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Suva 14101 ZZT/Z rndt.

F. E. ARNDT.

ROAD MACHINE.

APPLICATION FILED DBO. 27, 1911.

1,039,686. Patented Oct. 1, 1912. t

2 SHEETS-SHEET Z.

attain:

UNITED STATES PATENT OFFICE.

FRANKLIN E. ARNDT, OF GALION, OHIO, ASSIGNOR' TO THE GALION IRON WORKSCOMPANY, CORPORATION OF OHIO.

P Roan-momma.

To all whom it may concern:

Be it known that I,- FRANKLIN E'. Ammr,

citizen of the United States, residing at Galion, in the county ofCrawford and State of Ohio, have invented certain new and usefulImprovements in Road-Machines, of which the following is aspecification.

This invention comprehends certain new and useful improvements in roadmachines of the wheeled scraper, annular blade carrier type, and theinvention has for its primary object a simple, durable and 'eflicientconstruction of mechanism for lockin the annular blade carrier inadjusted position.

The invention also has for its'object a mechanism of'this characterwhich will be strong and not liable to get out of order and which willbecompose of comparatively few' parts that may be cheaply manufacturedand readily assembled, and the invention also aims to generally improvethis class of devices and to render them more useful and commerciallydesirable.

With these and other objects in view as will more fully appear as theinvention proceeds, the invention consists in certain constructions andarrangements of the parts that I shall hereinafter fully describe andclaim.

For a full understanding of the invention, reference is to be had to thefollowing description and accompanying drawing, in which:

Figure l is a sectional view of my improved annular blade carrierlocking device or mechanism; Fig. 2 is a plan view of a portion of saidapparatus; F 1g. 3 is a similar view showing parts that are omitted inFig. 2, and Fig. 4 is a detail perspective view of the two slides andtheir correlated parts.

Corresponding and like parts are referred to in the followingdescription and indicated in all the views of the drawing by the samereference characters.

Referring to the drawing, the reference numeral 1 designates the annularblade carrier of a road machine supported for revoluble movement withinthe framework 2 and embodying a cross bar 3. i The blade itself is notshown, as it forms no part of my present invention. The blade carrier 1is formed with an inner circle of teeth 4 designed to mesh with a pinion5, said pinion being secured to the lower end of a verticallydisposedspindle 6 equipped with a hand wheel 7 and journaled movement ina cross bar 8.

The cross bar 8 is supported upon an annular band 9, which is formed onits interior wall witha circular series of locking teeth 10 designed forengagement with plungers 11 that are mounted for a radial movement andthat are connected to or formed integral with the outer ends ofradiallyreciprocating rods 12. The rods 12 are arranged in diametricalalinement with each other, and their adjacent ends are passed throughand secured by pins 13 or similar fastening devices in theupstaridingapertured 'ears 14 that are formed on the-outer ends ofslides, designated 15 and 16, respectively. The slides 15, and 16 aremovable upon the upper face of the bar 3, the slide. 15 being blfurcatedandembracing the slide 16, as clearly illustrated in Fig.4. The slide 16is formed with a longitudinally extending slot 17 which accommodates thestep or lower bear:

'ing end of a vertically disposed plunger op-' erating shaft 18, saidshaft being journaled in a casing 19, as shown, and being provided atits lower end with two oppositely extend-- ing arms 20 movable in achamber 21 formed in said casing. The respective arms 20 carrydownwardly projecting eccentric pins 22 designed to operate between andbear against the opposing walls of transversely extending ribs 23 and 21, formed on the slides 16 and 15, respectively, the, inner end of theslide 16 passing underneath the rib 24 of the slide 15, as bestillustrated in Fig. 4. Springs 25 encircle the rods 12 near the outerends thereof and exert tension on said rods to move the latter outwardlyto effect locking engagementbetween the plungers 11 and the teeth orsockets 10 of the annular band 9. The springs 25 are dis osed betweenheads formed on the ends 0 the rods 1.2 and the edge of the annularblade carrier 1.

- From the foregoing description'in connection with the accompanyingdrawing, the

operation of my improved blade carrying .locking device will beapparent;

In the practical use of the device, when it is .desired to retract theplungers 11 from the keepers that are formed by the notches or sockets10 of the band 9, the operator grasps the hand wheel 26 on the upper endof the shaft 18, and thereby turns said shaft in either direction, whichwill ca'use the ec- Patented0ct.1, 1912.

I for rotary centric pins 22 to press against and ride upon the opposingedges of the ribs 23 and 24, consequently spreading said ribs apart andmoving the slides. 15 and 16 inwardly, one within the other, so as todraw the plun ger rods 12 inwardly and thereby retract the plungers.When the plungers are fully retracted, the pin carrying arms 20 are inlongitudinal alinement therewith, and preferably the ribs 23 and 24 areformed in their opposing edges with depressions 27 in which said pinsmay fit, so as to thereby hold the parts retracted until the desiredadjustment of the blade carrier shall have been effected by themanipulation of the hand wheel 7. As soon as the desired adjustment hasbeen secured,-a slight turning movement .is imparted to the shaft 18,whereupon the springs 25 will be permitted to act and will shoot theplungers into their keepers, the plate carrier being thereby securelylocked in position and held rigidly until another adjustment is desired.

It is to be particularly noted that by reason of the fact that theslides 15 and 16 engage with each other, the slides 'coact to guide eachother for rectilinear movement.

Furthermore, the slides may be made relatively broad so as to secure awide bearing surface, and be made so rigid as to reduce lost motionthrough'flexing of the parts. It ma be also pointed out in thisconnection that y reason of thefact that the slides interengage, theslides themselves form stops limiting the movement of the slides in onedirection, and that the cross bars 23 and 24 form stops limiting anyoutward movement of the slides away from each other, thus preventing anydanger of the rods 12 being broken, bent, or otherwise damaged by toOgreat a rotation of the hand wheel 26 in either direction.

While the accompanying drawing shows what I believe to be the preferredembodi-v ment of my invention, it is to be understood that the,invention is not limited thereto, but that various changes maybe made inthe construction, arrangement and proportions of the parts without.departing from the scope of the invention as defined in the appendedclaims.

1 Having thus described my invention, what is claimed as new is:

1. An apparatus of the character described, including a member providedwith keepers, latches arranged for engagement with said keepers,interengaging slides operatively connected to said latches and coactingto mutually-guide each other for rectilinear movement, and an actuatingshaft provided with eccentrlcs engaging said slides keepers, plungersadapted to engage said keepers, interengaging slides operativelyconnected to the respective plungers and coacting to mutually guide eachother for rectilinear movement, said slides being formed, respectively,transversely with extending ribs, and an actuating shaft provided witheccentrics mounted between and adapted to bear upon said ribs.

3. An apparatus of the character described, including a member providedwith keepers, plungers movable into engagement with said keepers, slidesoperatively connected to said plungers, one of said slides beingbifurcated and embracing the other, transverse ribs formed on therespective slides, and anactuating member provided with eccentric pinsinterposed between and adapted to bear against the opposing edges ofsaidiribs, for the purpose specified.

4. An apparatus of the character described, including a member providedwith keepers, plungersarr'anged for engagement with said keepers, slidesoperat-ively con nected to the respective plungers, one of said slidesbeing bifurcated and embracing the other slide, ribs formed on saidslides and extending transversely thereof, and an actuating shaftprovided with eccentric pinsinterposed between and'working against theopposing'edges of said ribs, such edges being formed with depressionsadapted to receive said pins, for the purpose specified.

5. An apparatus of the character described, including a member formedwith keepers, plungers arranged for engagement with said keepers, slidesoperat-ively connected to the respective plungers, one of said slidesbeing bifurcated and embracing the other slide, said last named slidebeing formed with a slot, an actuating shaft having its lower endextending'into said slot and provided with eccentric pins,.and ribsformed on the respective slides and extending transversely thereof, thepins being interposed between said ribs.

6. An apparatus of the character described, including a member formedwith keepers, spring actuated plungers movable into engagement with saidkeepers, rods secured to said plungers, slides formed with aperturedears in which the inner ends of said rods are secured, one of saidslides being bifurcated and embracing the other slide, and each slidebeing formed with a transversely extending rib, and an actuating shaftformed at one end withoppositely eX- tending arms, the arms beingprovided with pins interposed between and working against said ribs.

7. An apparatus of. the character described, including a memberprovided'with keepers, an annular-blade carrier, mounted in said member,latches carried by said blade carrier and arranged for engagement withsaid keepers, interengaging slides opera In testimon whereof I afiix mysignature tively connected to sald latches and coactin presence 0 twowitnesses. ing to guide each other for rectilinear movement, and anactuating shaft movable about FRANKLIN ARNDT' its axis in eitherdlrection to effect the Witnesses: simultaneous inward movement of saidslide Eva V. TALBO'IT,

whereby to retract the plungers. Cmms E. Fox.

